Improvement in adjustable tumbler for permutation-locks



UNITED STATES PATENT OFFICE.

OLIVER E. PILLARD, OF NEW BRITAIN, OONNEGTIOUQASSIGNOR TO FREDERIO H. NORTH, OF SAME PLAQUE.

IMPROVEMENT IN ADJUSTABLE TUMBLER FOR PERIVIU'IATION-LOCKS.

Specification forming part of Letters Patent N 0. 82,030, dated September 8, 1868.

To all whom it may concern Be it known that I, OLIVER E. PILLARD, of New Britain, in the county of Hartford and State of Connecticut, have invented and made a certain new and useful Improvement in Locks; and I do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the an nexed drawing, making part of this specification, wherein- Figure 1 is an elevation of the tumbler for a permutation-lock, to which my invention relates; and Fig. 2 is a cross-section of said tumbler at the line re :12.

The same parts are denoted by like letters.

In Letters Patent No. 71,640, a tumbler is shown for a lock in which the halves are hinged together,.and a tongue, running from one into the other, is operated upon by an cecentric to draw the half-rings together and bind the central disk.

My present invention is an improvement upon the aforesaid patent, whereby its construction is simplified, its cost lessened, and the tumbler rendered more reliable in use.

My invention relates to that class of locks in which a series of circular tumblers is mounted on a stud, each tumbler being provided with an inner disk and stud, by which motion is communicated from one to the other in setting the tumblers successively, according to-a dial on the outside of the lock, in order that notches in the edges of the tumblers may be placed in line to allow of the retraction of the bolt. This class of lock being well known, does not require further description. and the tumbler itself alone requires to be described.

In the drawing, a represents the disk of the tumbler, setting upon the stud or shaft b. c is a projection or stud on the-disk, taking a corresponding projection on the adjoining disk of the series. (I is the ring of the tumbler, formed hollow or of two plates, 1 and 2, between which are the flanges 3 and 4, the flange 3 forming, with the edges of the rings, theperiphcry of the tumbler, in which is the notch 5, as usual.

The ring (I is to be divided as at 6, and between the plates 1 and 2 I introduce the linkplate 6, that is attached at one end by the rivet or screw 7, and has a circular hole near the other end for the eccentric i, that is formed with circular bearings in the plates 1 and 2, and with a polygonal hole for the key by which it is operated.

The size of the opening within the flange 4 is such as to receive the edge of the disk a, and the eccentric i is to be turned, for securely clamping the said disk a, by the flange 4 of the tumbler-ring d, and thereby holding the tumbler-ring and its disk securely together, after the latter has been set to a given indexpoint, as in this class of looks.

The eccentric i when turned back will open the ring of the tumbler so that the disk a can be turned freely.

The tumbler-ring a may have one or more incisions in a radial direction, but passing only partially across said ring, so that the ring will spring more easily.

I do not claim the hinged ring and eccentric, as in the patent of James H. Porter, December 3, 1867; but

What I claim as an improvement thereon is- The circular tumbler, formed of the plates 1 and 2 and flanges 3 and 4, and divided, as at 6, in combination with the link-plate e and eccentric i. constructed and applied in the manner and for the purposes set forth.

In witness whereof I have hereunto set my signature this 14th day of February, A. D. 1868.

OLIVER E. PILLARD.

Witnesses:

HENRY NASH, C. ZIMMERMANN. 

